mirrors/ceph-csi
1
0
Fork 0
mirror of https://github.com/ceph/ceph-csi.git synced 2024-11-09 16:00:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

add validation to check if stagingPath exists

Browse Source 
It's CO responsibility to create the
stagingPath as per the CSI spec.

The CO SHALL ensure
// that the path is directory and that the process serving the
// request has `read` and `write` permission to that directory. The
// CO SHALL be responsible for creating the directory if it does not
// exist.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna 2019-07-25 14:31:10 +05:30 committed by mergify[bot]
parent 5af29662b2
commit dfbdec4b6a
4 changed files with 53 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
pkg/cephfs/nodeserver.go
View File

@ -104,11 +104,6 @@ func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVol
}
}
if err = util.CreateMountPoint(stagingTargetPath); err != nil {
klog.Errorf("failed to create staging mount point at %s for volume %s: %v", stagingTargetPath, volID, err)
return nil, status.Error(codes.Internal, err.Error())
}
idLk := nodeVolumeIDLocker.Lock(string(volID))
defer nodeVolumeIDLocker.Unlock(idLk, string(volID))
@ -289,10 +284,6 @@ func (ns *NodeServer) NodeUnstageVolume(ctx context.Context, req *csi.NodeUnstag
return nil, status.Error(codes.Internal, err.Error())
}
if err = os.Remove(stagingTargetPath); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
klog.Infof("cephfs: successfully unmounted volume %s from %s", req.GetVolumeId(), stagingTargetPath)
return &csi.NodeUnstageVolumeResponse{}, nil

49
pkg/rbd/nodeserver.go
View File

@ -91,10 +91,10 @@ func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVol
idLk := nodeVolumeIDLocker.Lock(volID)
defer nodeVolumeIDLocker.Unlock(idLk, volID)
// Check if that target path exists properly
isNotMnt, err := ns.createMountPath(stagingTargetPath, isBlock)
if err != nil {
klog.Errorf("stat failed: %v", err)
var isNotMnt bool
// check if stagingPath is already mounted
isNotMnt, err = mount.IsNotMountPoint(ns.mounter, stagingTargetPath)
if err != nil && !os.IsNotExist(err) {
return nil, status.Error(codes.Internal, err.Error())
}
@ -117,19 +117,27 @@ func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVol
klog.V(4).Infof("rbd image: %s/%s was successfully mapped at %s\n", req.GetVolumeId(), volOptions.Pool, devicePath)
isMounted := false
isStagePathCreated := false
// if mounting to stagingpath fails unmap the rbd device. this wont leave any
// stale rbd device if unstage is not called
defer func() {
if err != nil {
ns.cleanupStagingPath(stagingTargetPath, devicePath, volID, isBlock, isMounted)
ns.cleanupStagingPath(stagingTargetPath, devicePath, volID, isStagePathCreated, isBlock, isMounted)
}
}()
err = ns.createStageMountPoint(stagingTargetPath, isBlock)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
isStagePathCreated = true
// nodeStage Path
err = ns.mountVolumeToStagePath(req, stagingTargetPath, devicePath)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
isMounted = true
err = os.Chmod(stagingTargetPath, 0777)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
@ -140,7 +148,7 @@ func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVol
return &csi.NodeStageVolumeResponse{}, nil
}
func (ns *NodeServer) cleanupStagingPath(stagingTargetPath, devicePath, volID string, isBlock, isMounted bool) {
func (ns *NodeServer) cleanupStagingPath(stagingTargetPath, devicePath, volID string, isStagePathCreated, isBlock, isMounted bool) {
var err error
if isMounted {
err = ns.mounter.Unmount(stagingTargetPath)
@ -149,7 +157,7 @@ func (ns *NodeServer) cleanupStagingPath(stagingTargetPath, devicePath, volID st
}
}
// remove the block file created on staging path
if isBlock {
if isBlock && isStagePathCreated {
err = os.Remove(stagingTargetPath)
if err != nil {
klog.Errorf("failed to remove stagingtargetPath: %s with error: %v", stagingTargetPath, err)
@ -161,6 +169,21 @@ func (ns *NodeServer) cleanupStagingPath(stagingTargetPath, devicePath, volID st
}
}
func (ns *NodeServer) createStageMountPoint(mountPath string, isBlock bool) error {
if isBlock {
pathFile, err := os.OpenFile(mountPath, os.O_CREATE|os.O_RDWR, 0750)
if err != nil {
klog.Errorf("failed to create mountPath:%s with error: %v", mountPath, err)
return status.Error(codes.Internal, err.Error())
}
if err = pathFile.Close(); err != nil {
klog.Errorf("failed to close mountPath:%s with error: %v", mountPath, err)
return status.Error(codes.Internal, err.Error())
}
}
return nil
}
// NodePublishVolume mounts the volume mounted to the device path to the target
// path
func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
@ -180,7 +203,7 @@ func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
defer targetPathLocker.Unlock(idLk, targetPath)
// Check if that target path exists properly
notMnt, err := ns.createMountPath(targetPath, isBlock)
notMnt, err := ns.createTargetMountPath(targetPath, isBlock)
if err != nil {
return nil, err
}
@ -280,7 +303,7 @@ func (ns *NodeServer) mountVolume(stagingPath string, req *csi.NodePublishVolume
return nil
}
func (ns *NodeServer) createMountPath(mountPath string, isBlock bool) (bool, error) {
func (ns *NodeServer) createTargetMountPath(mountPath string, isBlock bool) (bool, error) {
// Check if that mount path exists properly
notMnt, err := mount.IsNotMountPoint(ns.mounter, mountPath)
if err != nil {
@ -376,9 +399,11 @@ unmount:
stagingTargetPath = blockStagingPath
goto unmount
}
if err = os.RemoveAll(stagingTargetPath); err != nil {
if stagingTargetPath == blockStagingPath {
if err = os.Remove(stagingTargetPath); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
}
return &csi.NodeUnstageVolumeResponse{}, nil
}
// Unmount the volume
@ -391,9 +416,11 @@ unmount:
return nil, err
}
if err = os.RemoveAll(stagingTargetPath); err != nil {
if stagingTargetPath == blockStagingPath {
if err = os.Remove(stagingTargetPath); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
}
klog.Infof("rbd: successfully unmounted volume %s from %s", req.GetVolumeId(), stagingTargetPath)

8
pkg/util/util.go
View File

@ -125,6 +125,14 @@ func CreateMountPoint(mountPath string) error {
return os.MkdirAll(mountPath, 0750)
}
// checkDirExists checks directory exists or not
func checkDirExists(p string) bool {
if _, err := os.Stat(p); os.IsNotExist(err) {
return false
}
return true
}
// IsMountPoint checks if the given path is mountpoint or not
func IsMountPoint(p string) (bool, error) {
dummyMount := mount.New("")

5
pkg/util/validate.go
View File

@ -24,6 +24,11 @@ func ValidateNodeStageVolumeRequest(req *csi.NodeStageVolumeRequest) error {
return status.Error(codes.InvalidArgument, "stage secrets cannot be nil or empty")
}
// validate stagingpath exists
ok := checkDirExists(req.GetStagingTargetPath())
if !ok {
return status.Error(codes.InvalidArgument, "staging path doesnot exists on node")
}
return nil
}